Combination cup and plunger oil well pump



Feb. 6, 1940. F. wlLcoM ET A1. 2,189,237

COMBINATION CUP' AND PLUNGER OIL WELL PUMP Feb, 6, 1940@e F. wlLcoM ET AL v2,189,237

COMBINATION CUP AND PLUNGER OIL NELL PUMP Filed Jyly 2l, 1937 5 Sheet's-Sheet 2 Fb. 6,1940., F `W.. COM HAL 2,189,237

COMBINATION CUP ,AND PLUNGER OIL WELL `PUMP Filedduly 21, 1937 s sheets-sheet s Patented Feb'. 6, 1940 COMBINATION CUP AND 1 'WELL BUMP,

Frank Wilcom ana Robertnmhoipson, 1 1 1 1 Okmulgee,0kla. r 111 1 1 Application Julyk 2,1, 1937, segni 316.154.370

1 Claim. (01,-v 10s-204.) y v I y 1 l Figu e8 is afragmental sectional view through I vThis invention has referencefto1 oil well pump construction, the primary object of the invention being to provide an oil well pump of the cup` `and plunger type which will be substantially sand proof, means being provided for scraping sand and foreign matter fromthe pumping tube, forming apart of the pump construction, during the operation of the pump.

`linotherobject of the invention is the prof vision of scraping1 means of theautomatically adjustable type, to the end lthat Ithe scraping means willV be held into close engagement with the pumping tube at all times, thereby compensating for wear between thepumping tube and scraper. f

Another object of the invention is the pro" struction hereinafter described and claimed, lit` being understood that changes in the precise embodiment ofthe invention herein, described, may

be made within the scope of'what is claimed,` 1`

without departing from the spirit tion. 1 1

Referring to the drawings: 1 l 1, V Figure 1 is alongitudinal sectional view through of Ythe inventhe pump tubing and a pump constructed accordance with the invention, the viewillustrating the upperv end of the pump. 1

Figure 2 is a longitudinal sectional view through the pump tubing and that portion of the pump1 directly underthe upper section;` of the pump, shown by Figure 1, and clearly illustrating the scraping means. 1 1

Figure 3 is a longitudinal sectional view through the pump tubing andthatvportion of the pump directly under the section of the pump illustrat-` ed by Figure 2 of the drawings.

Figure 4 is a longitudinal sectionalyiewthrough that portion of the pump tubing" and pump forming a continuation of the tubing and pump section illustrated by Figure13 of therdrawings. Figure 5 is alongitudinal sectional view through the lower portion of the pump tubing and pump; illustrating thecups andy meansjfor supporting.,

the cups. f 1 i v 1 .11 1 Figure 6 is a longitudinal sectional View through the lower portion of the pump tubing and pump, directly below the structureshown by Figure' 51 of the drawings.

Figure 7 is a longitudinal sectional View through the lower extremity of1 the pump tubing and pump, illustrating the lower ball valve, forming a part of the structure.'` 11j l n the pump housing,` illustrating `the .scraping means, in elevation. v

A `Figure 9, is a longitudinal sectional view through the 'pumphousing at a point `adjacent Ltothe jsraptigjflmbet the scraping' member being also shown in longitudinal section.1 i 1 1vFigure 10 is a` sectional `yiewtalien Ion line Inlllil'oi figurez; f

,1 i Figure V111 is atransverse sectional `view taken on. linefl I-AII A`of Figure ,2. .Figure`12 is a transverse'sectional on line` i2-I2 ,of Figure 8L 1 Figure 13l is a sectional` view taken on line I3--I 3 of1Fig`ure18. 1l Figure 14is a transverse sectional view taken online ,I4-I4' of Figure 5.

Referring to the drawings in detail, the numeral. 5, designates the tubulark pump housing,` `which[extends thro'ughout'the entire length of the pump. 1` 1, A 1

Supported within the pump housing 5, is a tubularyworkin'g barrelxindicated by the reference character1 6, and in}1.which the pumpingftube indicated by` the ,reference character 'I operates, Atthe upper'end`1of ythe pumping tube- 1, is a coupling 8, which coupling connectsltheA valve cage?) with the connecting rodA I0 of the pump rod. The `upper .end of `the 'connecting' rod I0 f 11S threaded at Il, so that the pump' rmmm.` 'bmeadilv connected thereto.' Y 1 1 Disposedbetween lthe coupling `8 and valve cage 9, is a valve seat indicated by thereference character I2, against which the ball `valve v"I, the members being heldf` into engagement with the pumpingf'tube `1, by means ofthe coiled springs"` I5, `which are shown as positioned,1 within circumferentiallgrooves formed .in the "spaced,` members Iii. the springs acting to normally4 urge` the spaced members. Itowards each other. [Thus 1 1 it will `beseen `thatfdue to this`.construction,

when the-'pumping tube` operates 1"withinthe, workingbarrel, theupper edges of,1 thes'paced members'` 1,41 will fact to scrape, sand Vor "other foreign' matter, ,1 from the pumping `tube,3 .tizliere1 it may fiallf,` downwardly `into the. space, between 1 thefscraping member land pump housing Formed at the lower end of each of the space'dy flangenII,` the `-ilanges ibeingitted in anannularj1 groove :formed nthe coupling 1 I1, i the;V coupling being provided with openingsnear its upperend,

lfor ytheriempiti@r1;.oithe'` balls I8: that Contact.

View taken i Figure 15.is a sectional view taken on Kline 1 355 1 f I3 seats,1 during the upstroke of `the pumping tubedMounted at the`1upper end ofthe1 iWorkirig1 barrel Ii,` is a scraper ,embodyingfl a pair of i spaced" members I4, the members libeingconf,

` structedto fclosely t yagainst'the,pumping ,tube 46 Cil with the pumping tube "l, reducing friction between the pumping tube and working barrel, to the end that the pumping tube may be operated with a minimum amount of power.

The coupling l1 is formed with internal threads that accommodate the external threads of the coupling I9, the coupling I9 being formed with an offset portion 2U which connects with the pipe section 2i of the working barrel. The offset portion 2U is formed with a plurality 0f openings 22 which establish communication between the space directly above the coupling I9 and the space between the working barrel andpumping tube 1.

As clearly shown by Figure 2 of the drawingsL the coupling l1 has its lower end spaced from the offset portion Zllcf the coupling I9, providinga space for the vertically moving valve member 23, which is designed to close the openings in the offset portion 20, on the downstroke of the pumping tube 1, the valve opening to release fluid, through the openings, onthe upstroke of rthe pumping tube; 1

On that section of the'working barrel directly below the sand scraping member, are Vpacking rings 24 whichy are held in spaced-relation with each other, by means of the spacing rings 25, the rings 25 beingV split and formed with beveled surfaces cooperating with beveled surfaces of the packing rings 24, so that the packing rings 24 are urged outwardly to insure a close fit between the vpack-ing rings and the section of the working barrel, in which the packing rings operate. Openings 24'- are provided in the offsetN portion 25 of the pipe section 26', the openings being closed by the valve 21' on the downstroke of the tube 1, but opened to release fluid on the upstroke of the tubeV l: The pumping tube 1, which embodies a plurality of connected sections, has certain of its sections connected by meansA of couplings such as indicated at 26, in Figures 4 and '7-, of the drawings,'which couplings `support `0 at the lowerend of the pumping tube,

valve seats 2'? againstwhich the ball valves 28 seat, to prevent liquid from passing downwardly through the pumping tube. Directly above each ValveZB', is a guard 219 `formed with openings 30 so, that liquidI maypass upwardly through the pumping tube,-and at the same time the ball valve associated therewith willV be restricted in its upwardw movements; It might be further stated thatone of these valve members 28 is rprovided The lower end of the working barrel, which is 'indie cated by the reference character 3U" is beveled, as clearly shown by Figure 7 of the drawings', and

fits' against an inclined surface 3 l` ofthe coupling `from, which sand and foreign matter falls into lthe space between the Scrapers and working barrel and is prevented from passing downwardly to the valve cup assembly or packing ringsdisposed' thereunder.'l

At- -t-he lower end of the pumping tube 1, *is thevalve-cup assembly which includes the tubular valve body section 36 which has a portion of its length cutaway defining a shoulder 31, whichA shoulder is formed with-grooves to--receivepontions of the valve cup 38, associated therewith, so that the heel portion of the valve cup 38 will be held against crawling from between the shoulder and the cup'ring 39, which cooperates with the valve cup 38.4 The upper end of the cup ring V39 is also formed with a groove so that portions of the cup 33 will be forced` into the groove,

stood that the valve cup assembly includes a plurality of valve rings 39, which are identically constructed, and arrangedone above the other, the valve rings 39 being held in spaced relation by `means of the valve cups 38 which are held between adjacent ends of the valve rings 39. At the lowermost endof the tubular valve body section 36, is a substantially long valve ring 40, which is held in position by means of the nut 4l, threaded on the lower end of the tubular valve body section On the upstroke of the pumping tube 7, fluid is drawn in through the stationary standing valve, ball 28 and seats 21, filling the chamber directly above the ball valve, to its capacity. On the down stroke, fluid is forced out of the chambei which automatically opens the rst valve 23 thereof, iilling the chamber between the pumping tube and-working barrel, the balance of the fluid discharging through the ball valve at the upper end of the pumping tube. As the plunger assembly moves upwardly with the pumping tube, fluidis forced upwardly, closing one flush valve and opening the flush valve thereabove, washing out all sand and sediment which have been removed bythe sand Scrapers, and carrying the sand and sediment to the upper end of the pumping tube, far above the pump. The uppermost flush valve closes on the down stroke of the pumping tube, allowing no back suction, thus preventing any sand and sediment being drawn back into the flushing chamber, which fills with fluid from the chamber therebelow, all fluid passing into-the chamber moving through the center of theI pump. i

It might be further stated that due to the con- Having thus described the invention, what is 1" claimed is:l

. An oil well pump .construction comprising a pump housing, a working barrel mounted within the pump housing, aA pumping tube operating withinthe working barrel and in spaced rela- E tion therewith, providing a chamber between the pumping tube and working barrel, a scraper on the-pumping tube and adapted to scrape sand from the working barrel, and deliver' the sand to the chambenvalvesadapted to control the pas- `.r

sage of liquid through the pumping tube, valves adapted to control the passage of liquid into the chamber whereby sand is hushed from the chamber; and the last mentioned valves adapted to closefonon'e stroke of the pumping tube preventf ing the return of sand and liquid into the pump from the chamber.

FRANK. wILCoM. ROBERTy D. THOMPSON.

4 insuring a tight t between the cup 38, shoulder 31,' and cup ring 39. It will of course be underlll' 

